The issue is not at all transparency, if your company once creates a business emergency by firing a significant portion of your customers, there’s really no reason for anyone to trust you.

If you’re doing it for money, you’re either financially weak or just cheap and looking to save cash by making your fired customers reengineer to accommodate a new provider.

The only way you can fire a huge swath of customers like this is to provide them with an essentially unbounded offboarding runway and being willing to grandfather many in, perhaps raising rates after a generous grace period to encourage departure.